Preheat oven to 400 degrees.
Line a muffin tin with paper cups.
Mix the first five ingredients together in a small bowl and set aside.
In a large bowl, mix together the next five dry ingredients. (flour, sugar, baking powder, baking soda, and salt)
Add egg, oil, butter, and extracts to the dry mixture. Do NOT overmix.
Gently fold in the blueberries.
Spoon muffin mixture into the muffin cups and crumble streusel topping onto the top of each.
Bake muffins for approximately 25 minutes, depending upon your oven.
Cool for a few minutes and enjoy!